Process of lining can ends and gasket-lined ends



7 J. M. YOUNG V PROCESS OF- LINING CAN ENDS IAND GASKET LINED suns Filed July 29 1922 illlllllllllllllllli I I II lml llllll JOHN- M. YOUNG, 0F BROOKLYN, NEW YORK, ASSIG'NOR TO AMERICAN COMPANY,

' OF NEW YORK, N. Y., A CORPORATION OF NEW JERSEY.

PROCESS OF LINI NG CAN ENDS AND GASKET-LINED ENDS.

Application filed July'29, 1922. Serial No. 578,338.

To all whom it may concern 1 Be it known that I, JOHN M. YOUNG, a citizen of the United States, residing in Brooklyn. in the county of Kings and State of New York, have invented a new and useful Improvement in Processes of Lining Can Ends and Gasket-Lined Ends, of which the following is a specification.

My invention relates in general to a process of lining can ends adapted for use upon hermetic containers and to an improved end of this character lined in accordance with said process.

It is customary to employ, in the seam between the end and body of a can in which food products are packaged, a gasket which serves to provide an hermetic seal when the flanges of said end and body are inter-folded in the usual double seam. Various types of gaskets have been employed for this purpose, the usual type being a paper ring I which is cut and applied to the flange of for this pu se,'

the can end prior to its assembly with the body. Liners of this character have not been, in all respects, satisfactory, due to certain defects in the material itself and to certain difficulties in incorporating it in the seam. In other words, the paper, being absorbent, sometimes becomes saturated with the liquid contents of the can-during the seaming operation and, upon. subsequently drying out, contracts, leaving small passages through which air may pass; also, the inexact position of such a gasket may result in irregularities which give rise to the same difiiculty. Y

In attemptmg to provide a more perfect gasket material, various compounds, usually containing a composition of rubber or like substance, have been tried, being ordinarily applied to the flange of the can end in liquid form and dried to the consistency desired.

For various causes, however, these compounds have not been entirely successful, either because of their being affected by the contents of the can, or being of such composition as to permit slight leaks in the finished seam. 4

It has, therefore, been proposed to use-a combination of a fibrous gasket with a rubber, or other water protective solution and, t e paper sheets, from which the gas ets are out before application to the can ends, have been treated with such solution to provide the desired combination.

A disadvantage of great importance was attendant upon this process, however, since there is necessarily a considerable amount of scrap left after the paper rings are cut from such sheets and, not only was the solution which Went into this scrap entirelylost, but, for practical purposes, the scrap paper was also lost, since, when so treated, it could not be sent back to paper mills for other use.

It is, therefore, a principal object of the present invention to provide a process of lining can ends in which the paper is saturated with parafline, or any compound which will prevent absorption of moisture orpassage of air, after it is positioned in the flange of the can end and the stock from which the gaskets are cut is, therefore, not impaired and can be returned to the mill to be.

sistant to penetration of moisture and air, thus providing an improved form of gasket seal. Other objects and advantages of the invention will be apparent as it is better understood from the following description, which, taken in connection with the accoms pznying drawings, discloses a preferred emdiment thereof. Referring to the drawings, Figure 1 is a vertical section taken .through the compound lining machine by which the parafline, or other compound, is de sited in the can end flange; ig. 2 is a sectional viewof a part of the Fig. 3 is a similar view, showing the manlining machine for applying fibrous gasmy invention may be employed, I have shown, in Fig. 1, a portion of a'co'mpound lining machine, which comprises primarily a framell, in which is mounted a rotatable end support 12, a reservoir 13 being sustained above said'support and-having in'the bottom thereof one ormore applying disks I r 14' by which the compound contained in the tation of said head and of 'the' support12 reservoir is adapted to be deposited. in the cup-like recess of the peripheral 15 Fig. 4) upon the can end 16. Said 018116 is held in inverted positionupon the support 12 by means of a head 17 rotatably mounted upon a plunger I8,'suitable' ball bearings 19 being provided to r0- which turns in cooperation with the applying disks 14-. The disk 14in mountedupo l .a pin, or shaft 21 having bearingsin the bottom plate 22 oi thejreservoir, and this shaft is rotated, to-cause the lining action of thedisk 14, by means of'a bevel "gear 23 meshing with a gear ring 24, which is seecured by means of an annulus 25 and a screw 26 to an actuating ring 27. It will be understood that suitable mechanism. is

provided for the operation of the actuating ring 27, this preferably being controlled by means for feeding the can end to the support 12, this mechanism, however, not being shown, since it forms no part of the present invention. 'The support 12 is lowered and raised in a known manner, after each such operation on a can end, so as to allow the discharge of'the treated can end, the reception of a new can end and the'clamping and rotation of the latter against the head 17 and in the, sphere of operation of the disks l4.

The disk 14 is provided with a series of peripheral pockets 28 which deliver measured quantities of the lining material from the reservoir 13 to the flange of the can end when said disk is rotated B means of the foregoing apparatus, or .ot er suitable mechanism, I deposit upon the peripheral flange of the can enda suitable quantity of paratfine, or other water protective com, pound, and it will be understood that this operation is completed prior to the delivery of the can ends to theusual paper gasket lining machine. 1

Referringnow to Fig. 2, showing apart of such lining machine, it will be noted that a paper gasket29 is forced into the flange of the can end. by means of a seating die 31, said gasket being supported upon a ledge 32 in a frame part 33 prior to its being seated in the end flange by the member 31. Said member 31 is carried upon' and 34 and actuated-in any preferred manner, and an end support 35, of any suitable character, 1s

provided for the sup ort of the can end during the gasket seating operation. Upon. completion of this operation, the ring lmer 29 will bepositioned. above a layer of par affine, or compound,'36 and, in this condition. the gasket is subjected to the action of the heating iron 37, shown in Fig. i

said iron being preferably heated by elec tricity and suitably insulated connections 38' being provided for necessarywiring. The

absorption of moisture, but also is less easily penetrated by air and is held in desired relationship, so that, when-the end isapplied to a can body, .a greatly improved hermetic seal is obtained.

It is thought that the invention and many of its attendant advantages will be understood from the foregoing description, and

it will be apparent that various changes may be made in the form, construction and arrangement ofthe parts without departing from the spirit and scope of the invention, or sacrificing all of its'material advantages, the form hereinbefoiie described being mere-. ly a preferred embodiment thereof. 1

I claim:

1. The process ofvgasket lining canends which comprises lining the peripheral flange of the end with a fusible compound, placing in said flange upon the compound, a thin absorbent gasket suitableto be interfolded in a double seam, and. applying heat to said gasket whereby the com ound is melted and caused to saturate the fi 'rous gasket rendering the same resistant to the penetration of moisture and air.

2. The process of gasket lining can ends which comprises linin the peripheral flange of the end witha fusi le compound, placing in said flange with said com ound, a thin absorbent gasket suitable to interfolded in a double seam, and applying a heated member to said gasket whereby the comipound is melted and caused to saturate the brous gasket rendering the same resistant to the penetration of moisture and air. I l

3. The process of gasket lining can ends which comprises lining theperipheral flan e of the end with parafiine, placing in said flange upon the parafline, a thin absorbent gasket suitable to be interfolded in a double seam, and applying heat to said gasket whereby the parafline is melted and caused to saturate the fibrous gasket rendering the sage resistant to the penetration of moisture an air.

misses 44. The process of gasket lining can ends which comprises separately lining the peripheral flange of the end with a fusible compound and with a fibrous thin, absorbent compound which is thus melted is caused to saturate the absorbent gasket rendering the same resistant to the penetration of moisand air.

adapted to be seamed to a can body to form an hermetic seal, said flange being lined with fusible compound and with a thin absorbent ring, said ring being'impregnated by melting said compound and thus rendered resistant to the penetration of moisture and air and pliable for interiolding in a double seam.

8. A can end having a peri heral flange adapted to be seamed to a can ldody to form an hermetic seal, said flange being lined with a fusible compound and having a thin absorbent gasket placed therein and impregnated with said compound by application of heat to said "fusible lining.

9. A canend having a peripheral flange adapted to be seamed to a can body to form an hermetic seal, said flange being lined with a fusible compound and a thin absorbent gasket placed therein and impregnated and sealed to the can end by application of heat to said fusible lining and made pliable for interfolding in a double seam.

10 A can end for application to a can adapted to be hermetically closed, said end having a peripheral flange adapted to be interfolded with the can body to close the can, said flange being lined with a fusible liquid proofing compound and having a thin paper gasket positioned therein, said gasket being penetrated with said compound and sealed to the can end by. to the compound in the ange, said gasket bein pliable for interfold ing in an hermetic A a saw ions in. rouse.

gipplication of heat v 

